Number Store Main Control Mechanism
Figure 13-2 shows the classes involved in the main Web page request and control mechanism. This diagram shows three «server page» classes, each of which is implemented as «JSP» components. The user session class is the J2EE HttpSession object and documents the key session state values used in this mechanism. The ScreenDefinition class, a simple wrapper of screen definitions, makes getting at all the discrete values of a single screen easy.
Figure 13-2. Class diagram of Number main control mechanism
The RequestProcessor class is implemented as a Java servlet. This class, which uses the user's session and a UseCaseCoordinator ...
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